摘要
福建省古田小溪组下段含丰富的孢粉化石,其组合特征是以裸子植物花粉为主,蕨类植物孢子其次,被子植物花粉极少。主要成分有:Classopollis、Exesipollenites、Cicatricosisporites、Jugella、Tricolpopollenites等。它和中国南方白垩纪孢粉组合序列中的Classopollis-Cicatricosisporites-Tricolpoppllenites带相当。地质时代为早白垩世的巴列姆期。
The paper focuses on the early Cretaceous palynologica) flora in Xiaoxi basin of Gutian County. The lower member of Xiaoxi Formation in Tiaoxi basin is abundant in spores and pollens. The sporopollen assemblage of the Xiaoxi Formation is gymnospermous pollens (53. 2—83.0%), pteridophyta (16.1—45.3%) and angiospermae (1%), which is Classopollis, Exesipollenites, Ephedripites (Ephe), Cicatricosisporites, Appendicisporites, Contignisporites, Klukisparites, Schizoeoisporites, Jugella, Trieolpopollenites and Tricolporopollenites. Their ages are mainly of Cretaceous. The Sporopollen assemblage can be compared with that of Guantou Formation in Zhejiang Province and of Gecun Formation in Jiangsu Province, and is equvalent to the Classopollis-Cicalricosisporites-Txicolpopollenites zone in the sporopollen assemblage series of South China. Therefore, it is concluded that the age of the lower Xiaoxi Formation is of the Barremian (early Cretaceous).
出处
《福建地质》
1993年第3期210-217,共8页
Geology of Fujian
关键词
孢粉
早白垩世
植物群
地质时代
desert steppe
early Cretaceous
Fujian Province
sporopollen assemblage
